Blue light is symptomatic treatment, but if bilirubin continues to be produced in a child’s body, or if there is an obstacle to the excretion of bilirubin, etc., it may cause jaundice that has been reduced by blue light in a child to go back home and rise again.
Blue light irradiation of bilirubin on the surface of the skin, so that the fat-soluble bilirubin light-oxygen interaction, converted into water-soluble bilirubin, can be excreted with the baby’s urine.
So blue light is targeting the bilirubin that has already been produced and helping it to be excreted. However, the body will continue to produce bilirubin after it stops irradiating blue light, and this bilirubin accumulates in the blood in the absence of blue light, leading to jaundice coming down and going back up again in children exposed to blue light.
Blue light is only a symptomatic treatment, repeated jaundice, need to check the cause, and then according to the cause of the cause to take the right treatment, in order to avoid repeated jaundice.